Buffer overflow in Liftoff-Sr Cipster
CVE-2026-76989
A security vulnerability has been detected in liftoff-sr CIPster 1802525be27d33e19a9a83c163e331a1d13b1892. This impacts an unknown function of the file source/src/enet_encap/encap.cc of the component TCP Encapsulation Receive Path. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is e8e9dba09bf56962807d3504b783ccdb6287f3e4. To fix this issue, it is recommended to deploy a patch.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Liftoff-Sr Cipster — versions 1802525be27d33e19a9a83c163e331a1d13b1892
Weakness classification (CWE)
References
- github.com/liftoff-sr/CIPster/ (product)
- github.com/liftoff-sr/CIPster/commit/e8e9dba09bf56962807d3504b783ccdb6287f3e4 (patch)
- github.com/liftoff-sr/CIPster/issues/46 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-76989 (third-party-advisory)
- vuldb.com/submit/880112 (third-party-advisory)
- vuldb.com/vuln/393612 (vdb-entry)
- vuldb.com/vuln/393612/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-76989?
- CVE-2026-76989 is a medium-severity vulnerability in Liftoff-Sr Cipster, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-08-20.
- How severe is CVE-2026-76989?
- Medium severity. CVSS v3 base score is 5.3 out of 10.